I have to design a AC/DC power supply with specifications as follows: -
Input : 90 - 230 VAC.
Input Frequency : 400Hz.
Output : 18V , 20 Watts.
Power Factor - above 0.95.
Isolated flyback topology.
So, I'm looking for a two stage process i.e.
1) PFC stage.
So, can you recommend separate IC's for these two stages, as I will be integrating both together to achieve both PFC as well as Flyback.